<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
  import BScroll from 'better-scroll'

  export default {
    data() {
      return {
        scroll: null,

      }
    },
    props: {
      probeType: {
        type: Number,
        default: 0
      },
      pullUpLoad: {
        type: Boolean,
        default: false
      }
    },
    mounted() {
      // 1.创建 BScroll 对象
      this.scroll = new BScroll(this.$refs.wrapper, {
        click: true,
        probeType: this.probeType,
        pullUpLoad: this.pullUpLoad
      })
      // 2.监听滚动的位置
      if (this.probeType == 2 || this.probeType == 3) {
        this.scroll.on("scroll", (position) => {
          // console.log(position);
          this.$emit('scroll', position);
        })
      }
      // 3. 上拉加载更多
      if (this.probeType == 2 || this.probeType == 3) {
        this.scroll.on("pullingUp", () => {
          // 发送网络请求
          // 等请求数据完成， 并将数据渲染出来后
          this.$emit('pullingUp');
        })
      }
    },
    methods: {
      scrollTo(x, y, time = 300) {
        this.scroll && this.scroll.scrollTo(x, y, time);
      },
      finishPullUp() {
        this.scroll && this.scroll.finishPullUp();
      },
      refresh() {
        this.scroll && this.scroll.refresh();
      }
    }
  }
</script>

<style>
</style>
